My first c++ program in blog

#include <iostream>

using namespace std;

int addm(int x, int y)

{

return x + y;

}

int subm(int x, int y)

{

return x - y;

}

int main()

{

int ok, ko, a, b;

cout << "enter two number " << endl;

cout << "ok! enter first number" << endl;

cin >> a;

cout << "ok ! enter second number" << endl;

cin >> b;

ok = addm(a, b);

ko = subm(a, b);

cout << "by adding these two numbers  " << ok << endl;

cout << "by substracting these two numbers " << ko << endl;

return 0;

}